Angle indicator for cornice brakes



Sept. 17, 1935. B. J. THEMAR ANGLE INDICATOR FOR CORNICE BRAKES Filed July 6, 1954 2 Sheets-Sheet l I nvenfor flllorney Sept. 17, 1935. B. J. THEMAR ANGLE INDICATOR FOR CORNICE BRAKES 2 Sheets-Sheet 2 Filed July 6, 1934 Inventor Patented Sept. 17, 1935 UNETED' STATES PATENT OFFIE Claims.

This invention has reference to a device primarily intended for use with a cornice brake to enable the tinsmith to ascertain accurately and at a glance the angle or degree to which a piece 5 of sheet steel is being bent in the forming of a cornice from the sheet.

An object of the invention is to provide a device of this character which may be readily applied to any and all makes of cornice brakes now in use and which is itself simple and economical in construction andv practical and efficient in operation.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure 1 is a top plan View illustrating an application of the invention.

Figure 2 is a sectional view taken substantially on the line 2-2 of Figure 1.

Figure 3 is a detail section taken substantially on the line 33 of Figure 2.

Figure 4 is a plan View of the gage forming part of the indicator.

Figure 5 is a sectional view taken substantially on the line 5-5 of Figure 4.

Figure 6 is a detail view taken substantially on the line 5-5 of Figure 4.

Referring more in detail to the drawings it 30 will be seen that the numeral I it indicates the face plate of a conventional cornice brake and between which plate and the bench the sheet of steel which is to be bent in the forming of the cornice is clamped. For cooperation with the 35 plate I0 is the usual apron II which is mounted to swing upwardly in a clockwise direction rela tive to the plate Ill for bending the sheet to the desired angle.

In accordance with the present invention, there 40 is provided a gage that is adapted to operate in conjunction with the apron I I for indicating the angle formed in the making of the cornice. The

l gage in the preferred embodiment thereof comprises a gage proper indicated generally by the reference numeral I2. The gage proper comprises. a casing I3 preferably of the shape shown and provided in the top thereof with a window l4. At the base thereof, the housing or casing I3 is provided with a suitable flange apertured 0 so as to accommodate a fastening element I5 whereby the casing is secured to the base plate Ill.

Arranged within the casing and resting on the bottom thereof is a protractor dial I6 having an arcuate scale graduated in terms of degrees.

A pointer I1 is movable over the face of the dial I6 and at one end is pivoted to rotate about the stud I8 as an axis. The stud I8 is threaded into a sutiab'le boss provided therefor in the bottom of the casing I3 as shown in Figure 5. Disposed about the boss and anchored at one end thereto is a coil spring I9 one end of which is also anchored to the pointer or index I! in a manner normally to urge the index to the zero position shown in the drawings.

At corresponding ends thereof the base plate l0 and apron II of the cornice brake are suitably notched to accommodate a segment or segmental pulley 20. The pulley 26 is suitably secured by fastening means 2| to one of a pair of ears 22 provided at the upper edge of the 15 apron I I at the notched end of the apron. These apertured ears 22 straddle an arm 23 projecting forwardly from a block 24 provided at the notched end of the base plate I 0. The arm 23 supports a pivot stud 25 and with this stud are 20 engaged the aforementioned ears 22. On the end of the stud 25 remote from the segmental pulley 20 is an operating handle or crank 26.

For operatively connecting the index or pointer I! with the pulley 20 there is provided a suit- 25 able length of piano wire or the like 2! which has one end portion operating in a groove 2011 provided in the edge or periphery of the pulley 26 and at one end anchored to the pulley through the medium of an anchoring screw 28 threaded 30 into a socket suitably provided in the pulley at one of the straight angularly related edges of the pulley. The wire 2'! which operates through a flexible metallic tube 29 suitably secured to the base plate Ill by clamps 3!] has its other end trained or operating in a groove provided in one edge of a substantially U-shaped guide or track 3| the ends of which are spaced an equal distance from the pivot or stud I8 and are secured within the casing I3 by suitable fastening means 32. The last named end of the wire 21 is secured to a loop 27a straddling the track 3| and then engaged with the pointer or index I! in a manner clearly shown in Figure 6.

From the above it will be apparent that when the arm 26 is swung upwardly to swing the apron II of the brake in a corresponding direction for forming the angle in the construction of the cornice, pulley 26 will rotate therewith for winding the wire 2'! thereon. Such will result in a pull on the wire 21 in a manner to cause the pointer IT to sweep over the dial I6, and obviously by reading the pointer against the graduations of the dial, the angle formed in the making of the cornice can be readily ascertained.

mg a casing, a dial mounted in the casing, a

Upon movement of the parts of the brake to the normal position, spring l9 will tend to return the pointer H to its normal or zero-indicating position.

What is claimed is:

1. In combination with the base plate and apron of a cornice brake, and a pivot pin for the apron, a protractor dial mounted on the base plate, a pulley mounted on said pivot for rotation with the apron of the brake, a pivoted pointed arranged to sweep over the graduations on the dial, and a member windable on the pulley and secured at one end thereto, and at an opposite end to the pointer for moving the pointer in consonance with the swinging of the apron for indicating the angle being formed in the cornice.

2. A gage of the character described comprising a casing, a dial mounted in the casing, a pointer pivotally mounted in the casing and arranged to sweep over the face of the dial, a substantially U-shaped track secured within the casing, concentric to the pivot of the pointer, and a flexible operating element for the pointer connected at one end with the pointer and having a portion operating within the groove of the track and a second portion embracing the track for guiding the pointer, and means connected with the flexible element for operating the pointer through said element.

3. A gage of the character described comprispointer pivotally mounted in the casing and arranged to sweep over the face of the dial, a substantially U-shaped track secured within the casing, concentric to the pivot of the pointer, and a flexible operating element for the pointer connected at one end with the pointer and having a portion operating within the groove of the track and a second portion embracing the track for guiding the pointer, means connected with the flexible element for operating the pointer through said element, and a spring device connected with the pointer and yieldably retaining the latter in zero-indicating position.

4. An angle gage for cornice brakes comprising a gage proper including a scale, a pivoted pointer mounted to move over the scale, a track disposed substantially concentric to the pivot of the pointer, a flexible operating element for the pointer connected therewith and having a portion operating within and guided by the track, and a pulley adapted to be associated with the apron of the cornice brake for movement therewith, and said flexible element being windable on the pulley and secured thereto for moving the pointer in consonance with the swinging of the apron for indicating the angle being formed in the cornice.

5. In a gage of the character described, a dial,

a pointer pivotally mounted and arranged to sweep over the face of the dial, a track disposed concentric to the pivot of the pointer, and a flexible operating element for the pointer connected at one end with the pointer and having a portion operating within the groove of the track and at second portion embracing the track for guiding the pointer.

BENJAMIN J. THEMAR. 

